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If the radius of cylinder is doubled, but height is reduced by 50% . What is the percentage change in volume ?

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CALCUTTA BOOK HOUSE-SAMPLE QUESTIONS PAPERS-QUESTION
  1. Prove that front formed at the centre of a circle by an arc is the dou...

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  2. Prove that if two triangles are equiangular. Then corresponding sides...

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  3. If the radius of cylinder is doubled, but height is reduced by 50% . W...

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  4. Two circles intersect each other at P externally. The straight QR touc...

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  5. Determin the value of square root of 29 by geometric method.

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  8. The heights of two towers are 210 metres and 70 metres respectively. ...

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  9. Narayan, standing in the midst of a field, observes a flying bird in h...

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  10. The length of circumference of the base of a right circular cylinder i...

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  11. If the ratio of the radii of two spheres be 1 : 2, then find the ratio...

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  12. If the circumference of the bases of a right circular cone 2*2 metres ...

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  13. sqrt6xx sqrt15=xsqrt10.then find the value of x.

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  14. Subtract the number (7-sqrt3) and (3+sqrt3)

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  15. Subtract the number (10-sqrt11) and (-5+3sqrt11)

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  16. The present price of a machine is ₹ 2V. If the price of the machine de...

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  17. Falgumni, Shreya and Smita started a partnership bussiness ₹ 6000. At ...

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  18. If p+q = sqrt(13) and p-q = sqrt(5), then the value of 2pq is

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  19. In the trapezium ABCD, AB"||"CD and two points P and Q are on the side...

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  20. Which one of the followings is correct ?

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